Cathedral carved out of salt, located a mile below the earth's surface.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

In the heart of Medellín, an artsy urban complex sets the stage for demonstrations and protests.

Home to 23 voluptuous and instantly lovable sculptures by one of Latin America's most celebrated artists.

Two identical statues by Fernando Botero, one blown to pieces in a terrorist bombing, the other donated as a gift for peace.

A graffiti Mecca welcoming artists from around the world.

Home to first responders to Greenpoint's devastating oil fires.

Church featuring "high Victorian gothic" architecture.

A drawbridge named for a potentially intersex Polish national who fought alongside George Washington during the American Revolution, and an example of "Pulaski Red".

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

Historic Greenpoint theater, turned roller disco, now housing a chain pharmacy store.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

There must be a pun in this haystack somewhere...

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

A bit of retro transportation flair preserved in the world's largest department store.

Cryptic messages embedded in the New York City sidewalk.

An artist's cute bronze subway sculptures belie his violent artistic past.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.